package com.tedu.weibo.controller;

import com.tedu.weibo.common.result.JsonResult;
import com.tedu.weibo.common.result.StatusCode;
import com.tedu.weibo.mapper.UserMapper;
import com.tedu.weibo.pojo.dto.UserLoginDTO;
import com.tedu.weibo.pojo.dto.UserRegDTO;
import com.tedu.weibo.pojo.entity.User;
import com.tedu.weibo.pojo.vo.UserVO;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;
import springfox.documentation.annotations.ApiIgnore;

import javax.servlet.http.HttpSession;
import java.util.Date;

@Api(tags = "用户模块")
@RestController
@RequestMapping("/v1/users")
public class UserController {
    @Autowired
    private UserMapper userMapper;


    @ApiOperation("用户注册功能")
    @PostMapping("/reg")
    public JsonResult reg(@RequestBody UserRegDTO userRegDTO){
        String username = userRegDTO.getUsername();
        User findUser = userMapper.selectByUsername(username);
        if (findUser!=null){
            return new JsonResult(StatusCode.USERNAME_EXISTS);
        }

        User user = new User();
        BeanUtils.copyProperties(userRegDTO,user);
        user.setCreated(new Date());
        userMapper.insert(user);
        return JsonResult.success();
    }

    @ApiOperation("用户登录功能")
    @PostMapping("/login")
    public JsonResult login(@RequestBody @Validated UserLoginDTO userLoginDTO, @ApiIgnore HttpSession session){
        User user = userMapper.selectByUsername(userLoginDTO.getUsername());
//        if (userLoginDTO.getUsername()==null||userLoginDTO.getUsername().isEmpty()){
////            throw new RuntimeException("用户名不能为空");
//            throw new IllegalArgumentException("用户名不能为空");
//        }
        if (user!=null){
            if (user.getPassword().equals(userLoginDTO.getPassword())){
                session.setAttribute("user",user);
                return JsonResult.success();
            }else {
                return new JsonResult(StatusCode.PASSWORD_ERROR);
            }
        }else {
            return new JsonResult(StatusCode.USERNAME_ERROR);
        }
    }

    @ApiOperation("获取用户当前登录信息")
    @GetMapping("/currentUser")
    public JsonResult currentUser(@ApiIgnore HttpSession session){
        User user = (User)session.getAttribute("user");
        if (user==null){
//            return null;
            return JsonResult.success();
        }else {
            UserVO userVO = new UserVO();
            BeanUtils.copyProperties(user,userVO);
            return JsonResult.success(userVO);
        }
    }
    @ApiOperation("退出登录功能")
    @GetMapping("/logout")
    public void logout(@ApiIgnore HttpSession session){
        session.removeAttribute("user");
    }


}
